Answer:
see explanation
Step-by-step explanation:
Since AC = BC then ΔABC is isosceles with base angles
∠BAC =∠ABC, thus
3x + x = 70
4x = 70 ( divide both sides by 4 )
x = 17.5
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∠ADC is an external angle of ΔABD and the external angle is equal to the 2 opposite interior angles, hence
y = 70 + x = 70 + 17.5 = 87.5
Answer:
4/5 or .8
Step-by-step explanation:
Answer:
The number would be 3.
Step-by-step explanation:
This problem can be written as
5x + 9 = 24
So to solve it, you have to isolate x:
5x + 9 = 24
5x + 9 - 9 = 24 - 9
5x = 15
5x÷5 = 15÷5
x = 3
Check:
5(3) + 9
= 15 + 9
= 24
